Hash-Based Data Transfer in Distributed Deduplication Storage Systems

2. The computer-implemented method of claim 1, wherein the source node omits the data from a transfer to the destination node in response to the first indicator that the data is present at the source node.

4. The computer-implemented method of claim 1, wherein each hash of the collection of hashes represents a different portion of a file designated for transfer from the source node to the destination node.

5. The computer-implemented method of claim 4, wherein each hash is received at the destination node with an offset value indicating which portion of the file the hash represents.

7. The computer-implemented method of claim 6, wherein the first and second indicators are transmitted to the source node as a bitmap.

9. The non-transitory computer-readable medium of claim 8, wherein the source node omits the data from a transfer to the destination node in response to the first indicator that the data is present at the source node.

11. The non-transitory computer-readable medium of claim 8, wherein each hash of the collection of hashes represents a different portion of a file designated for transfer from the source node to the destination node.

12. The non-transitory computer-readable medium of claim 11, wherein each hash is received at the destination node with an offset value indicating which portion of the file the hash represents.

14. The non-transitory computer-readable medium of claim 13, wherein the first and second indicators are transmitted to the source node as a bitmap.

16. The destination node of claim 15, wherein the source node omits the data from a transfer to the destination node in response to the first indicator that the data is present at the source node.

18. The destination node of claim 15, wherein each hash of the collection of hashes represents a different portion of a file designated for transfer from the source node to the destination node.

19. The destination node of claim 18, wherein each hash is received at the destination node with an offset value indicating which portion of the file the hash represents.